MEN1 and meningioma: Meningiomas can also be genetically determined and are present in several genetic syndromes such as: neurofibromatosis type 2 (NF2), which is most frequently associated with meningiomas, Gorlin, Li Fraumeni, Cowden, von Hippel–Lindau, and multiple endocrine neoplasia type 1 (MEN1).